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arXiv 1710.07548hep-ph
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光子-光子态电弱共振的对撞机产生

Collider production of Electroweak resonances from photon-photon states

Rafael L. Delgado, Antonio Dobado, Miguel Espada, Felipe J. Llanes-Estrada, Ivan Leon Merino

摘要:

我们从$γγ$散射中估计了电弱对称性破缺扇区(在$W_LW_L$和$Z_LZ_L$再散射中)的2体共振的产生截面。我们采用了统一的希格斯有效场论振幅先前计算耦合的双光子通道的EWSBS。我们在有效光子近似下工作,研究了1-2 TeV能量的$e^-e^+$碰撞(与未来的轻子机相关)和LHC能量的$pp$碰撞。动态产生一个自旋0共振约1.5 TeV(通过适当地选择参数的有效理论),我们发现,微分截面每单位$s$,$p_t^2$的顺序为0.01 fbarn/TeV $^4$在大型强子对撞机。注入自旋2共振约2 TeV,我们发现一个额外的因素100抑制$p_t$高达200 GeV。非常小的横截面使这些$γγ$过程,虽然非常干净,但在不久的将来搜索范围之外。

英文摘要:

We estimate production cross sections for 2-body resonances of the Electroweak Symmetry Breaking sector (in $W_LW_L$ and $Z_LZ_L$ rescattering) from $γγ$ scattering. We employ unitarized Higgs Effective Field Theory amplitudes previously computed coupling the two photon channel to the EWSBS. We work in the Effective Photon Approximation and examine both $e^-e^+$ collisions at energies of order 1-2 TeV (as relevant for future lepton machines) and $pp$ collisions at LHC energies. Dynamically generating a spin-0 resonance around 1.5 TeV (by appropriately choosing the parameters of the effective theory) we find that the differential cross section per unit $s$, $p_t^2$ is of order 0.01 fbarn/TeV$^4$ at the LHC. Injecting a spin-2 resonance around 2 TeV we find an additional factor 100 suppression for $p_t$ up to 200 GeV. The very small cross sections put these $γγ$ processes, though very clean, out of reach of immediate future searches.

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